Display screen with an icon



FIG. 1 is a front view of a display screen with an icon;

FIG. 2 is a front view of a second embodiment thereof; and,

FIG. 3 is a front view of a third embodiment thereof.

The broken lines of the display screen in the drawings are for the purpose of illustrating environmental structure and form no part of the claimed design. 

We claim the ornamental design for display screen with an icon, as shown and described. 